Sec Form 4 Filing - Shapiro Eric @ LUMINEX CORP - 2019-03-11

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Shapiro Eric 2. Issuer Name and Ticker or Trading Symbol LUMINEX CORP [ LMNX] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) SR VP, GLOBAL MARKETING (Last) (First) (Middle) 12212 TECHNOLOGY BLVD. 3. Date of Earliest Transaction (MM/DD/YY) 03/11/2019 (Street) AUSTIN, TX78727-6131 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 03/11/2019 F 964 ( 1 ) D $ 24.14 19,855 D Common Stock 03/12/2019 F 517 ( 2 ) D $ 24.43 19,338 D Common Stock 03/12/2019 A 6,242 A $ 24.43 26,757 ( 3 ) D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Stock Option (Right To Buy) $ 21.98 03/12/2019 A 21,122 ( 4 ) 03/12/2019 03/12/2025 Common Stock 21,122 $ 21.98 21,122 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Shapiro Eric 12212 TECHNOLOGY BLVD. AUSTIN, TX78727-6131 SR VP, GLOBAL MARKETING Signatures HARRISS T. CURRIE AS ATTORNEY-IN-FACT FOR ERIC SHAPIRO 03/11/2019 Signature of Reporting Person Date

Explanation of Responses:

( 1 )This disposition relates to withholding for taxes on 3,181 vesting shares associated with a previously reported issuance. ( 2 )This disposition relates to withholding for taxes on 1,706 vesting shares associated with a previously reported issuance. ( 3 )This balance includes a total of 1,177 shares obtained 05/31/18 under the Luminex Corporation Employee Stock Purchase Plan. ( 4 )The Board of Directors of Luminex Corporation determined the level of performance and number of shares earned for this performance option. The option will vest annually in four equal installments beginning 03/12/19.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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